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1
CN212826870U
一种用于光固化3D打印机的光源和光固化3D打印机
Grant
Publication/Patent Number: CN212826870U Publication Date: 2021-03-30 Application Number: 202021538165.1 Filing Date: 2020-07-28 Inventor: 曾江月   曹鑫   Assignee: 沃尔创新(深圳)科技有限公司   IPC: B29C64/282 Abstract: 本实用新型公开了一种用于光固化3D打印机的光源和光固化3D打印机,该光源包括:基板、多个阵列排布在所述基板上的灯珠组件和散热风扇,所述灯珠组件包括紫外LED灯珠、遮光罩和聚光镜,所述聚光镜罩住所述紫外LED灯珠,所述聚光镜设置在所述遮光罩内。本申请采用了多个灯珠组件与市场上采用单个LED的光源相比,在打印区域内投射出的光的强度更加均匀,避免了光固化3D打印中心过曝导致细节模糊,四周缺曝导致细节缺失的问题,使光固化打印出的模型更加精细,打印区域内各个位置的打印质量更加稳定。
2
CN112519224A
光固化3D打印机及其光源系统
Substantial Examination
Publication/Patent Number: CN112519224A Publication Date: 2021-03-19 Application Number: 202011390763.3 Filing Date: 2020-12-02 Inventor: 刘振亮   Assignee: 优你造科技(北京)有限公司   IPC: B29C64/282 Abstract: 本申请是关于一种光固化3D打印机及其光源系统。该光源系统包括:光源和反射机构;其中,所述反射机构设置在所述光源发出光线的光路上,用于对从光源发出的光线进行反射,并经过最后一次反射后形成的光束中心线向上地与LCD投影面相垂直。该光源系统通过设置反射机构,利用反射原理将原有的垂直光路改变为多条反射光路,由此在机体尺寸不变的前提下实现了光路的延长,减少了光源的分散角,进而提高了光线的准直度,改善小孔特征的成形质量,进而提高了打印产品的尺寸精度,以满足高精度模型的装配需求。
3
CN112606388A
一种光固化3D打印机
Public
Publication/Patent Number: CN112606388A Publication Date: 2021-04-06 Application Number: 202011381561.2 Filing Date: 2020-11-30 Inventor: 刘辉林   唐京科   陈春   敖丹军   张晓明   Assignee: 深圳市创想三维科技有限公司   IPC: B29C64/129 Abstract: 本发明的实施例提供了一种光固化3D打印机,其包括:Z轴机构、固化加工台、LCD显示屏、料槽、成型平台及光源机构;固化加工台连接于所述Z轴机构,LCD显示屏设置于固化加工台上,料槽设于LCD显示屏的顶端,成型平台连接于Z轴机构,且被配置为在固化加工台上方沿Z轴机构上下移动;光源机构设于固化加工台的下方,光源机构包括积分式光源组件、反射镜,积分式光源组件发射的光线经反射镜反射后依次穿透成型平台、LCD显示屏后,将LCD显示屏上显示的图像投影到料槽上,其通过采用积分式光源作为光源机构光源,可以很好的解决不同灯珠间的光强差异,整个曝光区域相对光强均匀没有突变边界,成型精度高,解决光固化成本高,质量差的问题。
4
CN212446349U
3D打印光波脉冲固化仪
Grant
Publication/Patent Number: CN212446349U Publication Date: 2021-02-02 Application Number: 202020915825.7 Filing Date: 2020-05-27 Inventor: 孙志文   郑承对   陈晨   钱锟   Assignee: 宁波蓝野医疗器械有限公司   IPC: B29C64/282 Abstract: 3D打印光波脉冲固化仪,包括壳体,壳体内设置有空腔,空腔内设置放置平台,放置平台的上方还设置光源模组,光源模组设置于壳体内,其特征在于,光源模组背后设置有光源散热系统,放置平台的下方设置有旋转机构,放置平台上设置有定位凸起,定位凸起配合设置有可拆卸的透明储物筒,光源模组包括三个光照板,位于中间的光照板设置在壳体的正中心,两侧的光照板分别与中间的光照板呈120度夹角。本实用新型优点:能均匀照射被测物表面,有效减小被固化物的扭曲与变形,以及能够方便有效的拿取和安装透明储物筒。
5
CN112248436A
基于多激光器的扫描路径规划方法、装置以及三维物体制造设备
Substantial Examination
Publication/Patent Number: CN112248436A Publication Date: 2021-01-22 Application Number: 202011015638.4 Filing Date: 2020-09-24 Inventor: 王朝龙   杨大风   Assignee: 湖南华曙高科技有限责任公司   IPC: B29C64/20 Abstract: 一种基于多激光器的扫描路径规划方法、装置以及三维物体制造设备,其中方法通过包括:将多个激光器呈阵列式设置于工作区域的上方,所述多个激光器是指四个以上的偶数个激光器;获取至少一个由相邻的四个激光器分别覆盖区域中重叠的部分,并将该部分记作核心区域,所述核心区域为矩形;从核心区域的每一条边的中点向外延伸,以将工作区域分为核心区域,以及由该相邻的四个激光器分别单独负责扫描的四个区域;在工作区域中根据待打印制件的扫描截面设置多条扫描线,并根据每一条扫描线所位于的区域确定对该扫描线分配对应的激光器,本发明基于多激光器的扫描路径规划方法、装置以及三维物体制造设备减少了扫描的搭接数量,从而提高了成型质量。
6
US2021001559A1
DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
Publication/Patent Number: US2021001559A1 Publication Date: 2021-01-07 Application Number: 16/968,656 Filing Date: 2019-02-05 Inventor: Thiel, Christiane   Assignee: SLM Solutions Group AG   IPC: B29C64/393 Abstract: A device (10) for calibrating an irradiation system (12) of an apparatus (14) for producing a three-dimensional work piece is suggested, the irradiation system (12) comprising a first irradiation unit (16) for selectively irradiating a first irradiation beam (18) along a first operating axis (20) onto an irradiation plane (22) and a second irradiation unit (24) for selectively irradiating a second irradiation beam (26) along a second operating axis (28) onto the irradiation plane (22), wherein the device (10) comprises: control unit (30) adapted to control the first irradiation unit (16) so as to irradiate the first irradiation beam (18) onto the irradiation plane (22) according to an irradiation pattern (32) and to control the second irradiation unit (24) so as to displace the second operating axis (28) relative to the irradiation plane (22) such that the second operating axis (28) traverses the irradiation pattern (32) produced by the first irradiation unit (16) onto the irradiation plane (22); and a detecting unit (34) adapted to detect process emissions emitted from a region of an impingement point (36) on the irradiation plane (22) at which the second operating axis (28) of the second irradiation unit (24) passes the irradiation plane (22) and to output signals indicative of the detected process emissions to the control unit (30); and wherein the control unit (30) is further adapted to determine a position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) on the irradiation plane (22); determine a position (x1 . . . n, y1 . . . n) of at least one intersection point (38) between the irradiation pattern (22) produced by the first irradiation unit (16) and the second operating axis (28) of the second irradiation unit (24) based on the signals output by the detecting unit (34); and calibrate the irradiation system (12) based on the determined position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) and the determined position (x′S1, y′S1) of the at least one intersection point.
7
CN112406101A
一种大面积连续光固化3D打印装置及其打印方法
Substantial Examination
Publication/Patent Number: CN112406101A Publication Date: 2021-02-26 Application Number: 202011351984.X Filing Date: 2020-11-26 Inventor: 季节   郝俊宇   王朝杰   李浩   刘帆   Assignee: 济宁学院   IPC: B29C64/129 Abstract: 本发明公开一种大面积连续光固化3D打印装置及其打印方法,属于3D打印装置技术领域,包括打印平台,打印平台连接有平台支架,所述打印平台的下方设有树脂槽,树脂槽内设有膜,树脂槽外部的下方设有投影仪,所述投影仪包括多个,打印平台上设有多个与投影仪的投影中心对应的过孔,打印平台与树脂槽之间设有多个膜形变支撑部件,所述膜形变支撑部件的上端连接平台支架,膜形变支撑部件的下端与膜相接触。可有效减少膜受力产生的形变,提高打印质量,增加打印尺寸。本发明消除了DLP打印机打印尺寸对膜硬度的依赖,使DLP打印机的打印尺寸大幅提高。配合打印方法,实现了任意尺寸的3D物体连续成型。
8
CN112606389A
一种光固化3D打印机屏幕光强调节方法及调节装置
Public
Publication/Patent Number: CN112606389A Publication Date: 2021-04-06 Application Number: 202011382612.3 Filing Date: 2020-11-30 Inventor: 刘辉林   唐京科   陈春   敖丹军   张晓明   程敏强   Assignee: 深圳市创想三维科技有限公司   IPC: B29C64/129 Abstract: 本发明涉及3D打印机技术领域,公开一种光固化3D打印机屏幕光强调节方法,其包括如下步骤:S1.利用黑白相机采集光固化3D打印机的屏幕图像;S2.将屏幕图像分为若干个采集区域;S3.预设光固化3D打印机的屏幕的标准光强范围;S4.判断采集区域的实际光强是否处于标准光强范围内,若是则对采集区域的灰度值进行一级调节;若否则对采集区域的灰度值进行调节,以使调节后采集区域的实际光强处于标准光强范围内,并记录灰度值的调节值;S5.将调节值输入光固化3D打印机中,利用调节值对屏幕的灰度进行调节以形成灰度图片,并使屏幕在打印过程显示灰度图片。该光固化3D打印机屏幕光强调节方法能够提高屏幕的光强均匀性,有利于提高光固化3D打印机的打印精度。
9
CN112654493A
增材制造三维物体的设备
Public
Publication/Patent Number: CN112654493A Publication Date: 2021-04-13 Application Number: 201980058236.1 Filing Date: 2019-07-12 Inventor: 斯蒂芬·韩泽   鲍里斯·艾肯伯格   Assignee: CL产权管理有限公司   IPC: B29C64/282 Abstract: 通过对可通过能量束固结的构建材料(3)层进行连续分层选择性照射和固结来增材制造三维物体(2)的设备(1),其中,提供了照射装置(4),该照射装置(4)适于生成至少两个相干能量束(7),其中,照射装置(4)包括调制单元(5),该调制单元(5)适于将至少两个能量束(7)组合成组合能量束(8),并调节组合能量束(8)的至少一个组合束特性。
10
US2021053278A1
ENERGY DOSING FOR ADDITIVE MANUFACTURING
Publication/Patent Number: US2021053278A1 Publication Date: 2021-02-25 Application Number: 16/074,805 Filing Date: 2017-03-29 Inventor: Addington, Cary G.   Champion, David A.   Shaarawi, Mohammed S.   Mckinnell, James   Hammerstad, Diane R.   Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.   IPC: B29C64/153 Abstract: In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.
11
US10935891B2
Multi wavelength stereolithography hardware configurations
Publication/Patent Number: US10935891B2 Publication Date: 2021-03-02 Application Number: 15/919,124 Filing Date: 2018-03-12 Inventor: Lin, Pierre   Aghababaie, Arian   Greene, Richard   Adzima, Brian   Pomeroy, Jonathan   Assignee: Holo, Inc.   IPC: G03F7/20 Abstract: The present disclosure provides methods, systems, and apparatuses relating to hardware configurations for performing multi-wavelength three dimensional (3D) printing using photoinhibition. In at least one aspect, a system for 3D printing comprises a reservoir capable of holding a liquid including a photoactive resin, a build head that undergoes relative motion within the reservoir during 3D printing of a 3D object on the build head, a light projection device that projects a photoinitiation light beam at a first wavelength into a build area within the liquid, and a plurality of light sources arranged with respect to the light projection device and the reservoir that project a plurality of photoinhibiting light beams into the build area at a second wavelength. Each of the plurality of photoinhibition light beams may be projected at a peak intensity in a different respective position in the build area.
12
US2021060857A1
LASER ARRAY POSITION DETECTION
Publication/Patent Number: US2021060857A1 Publication Date: 2021-03-04 Application Number: 17/009,892 Filing Date: 2020-09-02 Inventor: Sweetland, Matthew   Assignee: VulcanForms Inc.   IPC: B29C64/153 Abstract: Aspects described herein relate to additive manufacturing systems and related methods. In some embodiments, an additive manufacturing system includes a laser array position detector to determine a position and/or orientation of laser energy pixels in a laser array. The laser array position detector may include an aperture and an optical sensor positioned within the aperture to detect laser energy from a laser energy pixel when the laser array is scanned across the aperture.
13
CN109747150B
一种SLA光固化3D打印设备
Grant
Publication/Patent Number: CN109747150B Publication Date: 2021-03-30 Application Number: 201910249781.0 Filing Date: 2019-03-29 Inventor: 黄成   Assignee: 重庆秋平模型有限公司   IPC: B29C64/124 Abstract: 本发明公开了一种SLA光固化3D打印设备,包括机体,所述机体上设置有可以打开或者关闭的机门,所述机体内设置有树脂槽,所述树脂槽内用于放置液态树脂,所述树脂槽上还安装有用于对液态树脂上表面进行刮平的刮刀以及带动刮刀运动的刮刀运动机构,所述树脂槽内设置有托板,所述托板向上设置有支座,所述支座上设置有金属板,所述金属板上设置有漏孔,所述机体内设置有用于带动所述托板做上升或者下降的托板运动机构,所述机体内部上端设置有至少两个光源,所述光源设置在光源移动机构上,还包括控制器,所述刮刀运动机构、托板运动机构和光源移动机构均与所述控制器电性连接。本发明具有进行打印、多激光头打印、自动补液的优点。
14
US10974450B2
3D printer with tuned fusing radiation emission
Publication/Patent Number: US10974450B2 Publication Date: 2021-04-13 Application Number: 16/072,247 Filing Date: 2016-05-17 Inventor: Ge, Ning   Benning, Paul J.   Zhao, Lihua   Simske, Steven J.   Assignee: Hewlett-Packard Development Company, L.P.   IPC: B29C64/165 Abstract: According to an example, a three-dimensional (3D) printer may include a first delivery device to selectively deposit first liquid droplets onto a layer of build materials, in which the first liquid has a fusing radiation absorption property. The 3D printer may also include a fusing radiation generator to selectively emit fusing radiation at multiple ranges of wavelengths and at selected locations to selectively fuse the build materials and a controller to tune a range of wavelengths at which the fusing radiation generator is to emit fusing radiation based upon the fusing radiation absorbing property of the deposited first liquid, to determine the selected locations at which the fusing radiation at the tuned range of wavelengths is to be emitted, and to control the fusing radiation generator to selectively emit fusing radiation at the tuned range of wavelengths and onto the selected locations.
15
US10882256B1
Device and method for calibrating an irradiation system of an apparatus for producing a three-dimensional work piece
Publication/Patent Number: US10882256B1 Publication Date: 2021-01-05 Application Number: 16/968,656 Filing Date: 2019-02-05 Inventor: Thiel, Christiane   Assignee: SLM Solutions Group AG   IPC: B29C64/393 Abstract: A device (10) for calibrating an irradiation system (12) of an apparatus (14) for producing a three-dimensional work piece is suggested, the irradiation system (12) comprising a first irradiation unit (16) for selectively irradiating a first irradiation beam (18) along a first operating axis (20) onto an irradiation plane (22) and a second irradiation unit (24) for selectively irradiating a second irradiation beam (26) along a second operating axis (28) onto the irradiation plane (22), wherein the device (10) comprises: control unit (30) adapted to control the first irradiation unit (16) so as to irradiate the first irradiation beam (18) onto the irradiation plane (22) according to an irradiation pattern (32) and to control the second irradiation unit (24) so as to displace the second operating axis (28) relative to the irradiation plane (22) such that the second operating axis (28) traverses the irradiation pattern (32) produced by the first irradiation unit (16) onto the irradiation plane (22); and a detecting unit (34) adapted to detect process emissions emitted from a region of an impingement point (36) on the irradiation plane (22) at which the second operating axis (28) of the second irradiation unit (24) passes the irradiation plane (22) and to output signals indicative of the detected process emissions to the control unit (30); and wherein the control unit (30) is further adapted to determine a position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) on the irradiation plane (22); determine a position (x′S1, y′S1) of at least one intersection point (38) between the irradiation pattern (22) produced by the first irradiation unit (16) and the second operating axis (28) of the second irradiation unit (24) based on the signals output by the detecting unit (34); and calibrate the irradiation system (12) based on the determined position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) and the determined position (x′S1, y′S1) of the at least one intersection point.
16
US2021031504A1
LAYER ORIENTATION CONTROL FOR PIXEL-BASED ADDITIVE MANUFACTURING
Publication/Patent Number: US2021031504A1 Publication Date: 2021-02-04 Application Number: 17/072,119 Filing Date: 2020-10-16 Inventor: Sands, Travis Gene   Deak, Stephen Michael   Assignee: General Electric Company   IPC: B33Y10/00 Abstract: A method of making a workpiece in an additive manufacturing process includes determining a preferred angular orientation of the grid array about a build axis extending perpendicular to a layer to be built for a first layer of a workpiece. The preferred angular orientation is selected to align an edge of one or more pixels with an edge of the layer of the workpiece being built. The method further includes orienting a patterned image of radiant energy to the preferred angular orientation by rotating a projector before solidifying a portion of a resin that forms the first layer of the workpiece.
17
CN112600062A
用于粉末床制作或修复的二极管激光器光纤阵列
Public
Publication/Patent Number: CN112600062A Publication Date: 2021-04-02 Application Number: 202011248193.4 Filing Date: 2014-12-08 Inventor: M.g.琼斯   W.t.卡特   J.w.西尔斯   Assignee: 通用电气公司   IPC: H01S3/23 Abstract: 本发明主题是“用于粉末床制作或修复的二极管激光器光纤阵列”。在粉末床中形成构造的方法包含:将多个激光束从二极管激光器光纤阵列的所选光纤发射到粉末床上,阵列的所选光纤对应于构造的层的模式;使对应于构造的层的模式的粉末床中的粉末同时熔融。用于在粉末床中形成构造的设备包含二极管激光器光纤阵列,其包含多个二极管激光器和对应于多个二极管激光器的多个光纤,每个光纤配置成从相应二极管激光器接收激光束并且发射激光束;配置成支承粉末床或组件的支承,配置成在离光纤末端一定距离支承粉末床;控制器,其配置成控制二极管激光器光纤阵列来将多个激光束从二极管激光器光纤阵列的所选光纤发射到粉末床上,阵列的所选光纤对应于构造的层的模式并且使对应于构造的层的模式的粉末床中的粉末同时熔融。
18
US10882160B2
Correction of fabricated shapes in additive manufacturing using sacrificial material
Publication/Patent Number: US10882160B2 Publication Date: 2021-01-05 Application Number: 15/873,851 Filing Date: 2018-01-17 Inventor: Redfield, Daniel   Fung, Jason Garcheung   Yamamura, Mayu Felicia   Assignee: Applied Materials, Inc.   IPC: B24D11/00 Abstract: A method of fabricating a polishing pad using an additive manufacturing system includes depositing a first set of successive layers onto a support by droplet ejection. Depositing the first set of successive layers includes dispensing a polishing pad precursor to first regions corresponding to partitions of the polishing pad and dispensing a sacrificial material to second regions corresponding to grooves of the polishing pad. A second set of successive layers is deposited by droplet ejection over the first set of successive layers. The second set of successive layers corresponds to a lower portion of the polishing pad. The first set of successive layer and the second set of successive layers provide a body. The body is removed from the support. Removing the sacrificial material from the body provides the polishing pad with a polishing surface that has the partitions separated by the grooves.
19
EP3774132A1
MAGNETIC CONFINEMENT HEATING DEVICE FOR SELECTIVE ADDITIVE MANUFACTURING APPARATUS
Publication/Patent Number: EP3774132A1 Publication Date: 2021-02-17 Application Number: 19720981.0 Filing Date: 2019-04-05 Inventor: Walrand, Gilles   Minea, Tiberiu   Ballage, Charles   Lundin, Daniel   Petty, Thomas   Assignee: AddUp   CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE -CNRS-   Université Paris-Saclay   IPC: B22F3/105
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US10926469B2
Three-dimensional laminating and fabricating system, three-dimensional laminating and fabricating method, laminating and fabricating control apparatus and method of controlling the same, and control program
Publication/Patent Number: US10926469B2 Publication Date: 2021-02-23 Application Number: 15/125,078 Filing Date: 2016-05-31 Inventor: Amaya, Koichi   Midorikawa, Tetsushi   Kawaji, Masaaki   Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING   IPC: B29C64/35 Abstract: This invention provides a three-dimensional laminating and fabricating system that can remove the influence of a gas flow between the irradiation positions by a plurality of irradiators. The three-dimensional laminating and fabricating system includes a laminating and fabricating unit that includes a plurality of irradiators configured to irradiate a laminating material, and a remover configured to generate a flow path on a laminated surface and remove dust generated by the irradiated laminating material, to cause the plurality of irradiators to perform irradiation to fabricate each layer of a laminated and fabricated object made of the laminating material as an aggregate of cell regions, and a laminating and fabricating controller that controls selection of each of the cell regions to be irradiated by each of the plurality of irradiators so as to prevent the dust generated in each of the cell regions on an upstream side of the flow path from influencing fabricating in each of the cell regions on a downstream side of the flow path.
Total 13 pages